After some extensive testing, that setting did absolutely nothing 🙂 But I think I found the right setting now. The problem occurs when the VPN client tries to (re)connect after wakeup and the network connection / WiFi isn't ready yet. That setting was on 5 seconds which was apparently too short. I set it to 10 seconds now.Found a parameter to enable a disconnect on sleep feature. Will implement that for the next Mac version (3.0.2) to see if it helps.